Home / 129,634.70-194,452.05-80,961.80

Finding the Fourth Proportional to 129,634.70, 194,452.05 and 80,961.80

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Solution

The fourth proportional to 129,634.70, 194,452.05 and 80,961.80 is: 121,442.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,634.70 : 194,452.05 = 80,961.80 : x
  2. Step 2: Convert to fraction form
    129,634.70/194,452.05 = 80,961.80/x
  3. Step 3: Cross multiply
    129,634.70x = 194,452.05 × 80,961.80
  4. Step 4: Simplify right side
    129,634.70x = 15,743,187,981.69
  5. Step 5: Solve for x
    x = 15,743,187,981.69/129,634.70
  6. Step 6: Final answer
    x = 121,442.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.